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Motorcraft 2100 Metering Jets
Holley and Early Motorcraft Main Metering Jet 120-40-52
Holley and Early Motorcraft Main Metering Jet 120-40-52
Holley and Early Motorcraft Main Metering Jet 120-40-52
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5
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5
Your Price:
$5.95
1/4" x .052"
Part Number:
120-40-52
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Description
Customer Reviews
Holley and early Motorcraft hi-performance main metering jets.
Price is for one jet, some carburetors will require two.
SPECS:
Threaded end: 1/4"
Orifice: .052"
CARBURETORS:
Holley 94
Holley 847
Holley 1904
Holley 1920
Holley 1940
Holley 2300
Holley 4000
Holley 4150
Holley 4160
Early Motorcraft 2100
Early Motorcraft 4100
Does not fit the 2280, or 6280 2 barrel.
The later (after 1963)
Motorcraft 2100 & 4100 use this jet
.
TECHNICAL:
Don't ruin your engine. Printed specifications for jets were printed many years before the introduction of ethanol so you need to use trial & error to get the correct jet size. Test by looking at your spark plugs. Gray burning plugs are good, black is too rich, white is too lean. Change 1, or 2 jets sizes and repeat the test.
These jet sizes assume 0-5000 feet in elevation. For 5000-10000 reduce by 2, for 10000-15000 reduce by 4.
Some Holley jets were marked using 3 digits. Example 630 would equate to .063 in our list.
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Average Customer Ratings
5.0
jet
great item at a real fair price
Did you find this helpful?
Reviewed by:
H D Smith III
from shelby on 3/4/2024
5
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